Thin polyester heat sealing film which is easily pierceable with autosampler needles/ABI® 3730. The seal is suitable for PCR, qPCR and optical applications.
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Overview
Thin polyester heat sealing film which is easily pierceable with autosampler needles/ABI® 3730. The seal is suitable for PCR, qPCR and optical applications.
Heat sealing offers a 100% effective method for plate sealing for a complete seal integrity, as well as being quick and cost effective
Our ClearASeal Pierce heat sealing film is an optically clear polyester backed film, forming a pierceable seal to polypropylene, polyethylene, polystyrene and cyclic olefin copolymer (COC) plates
The optical clarity of this seal enables its use for sealing plates required for imaging use, including fluorescent detection methods such as qPCR and colorimetric assays
Its pierceability renders it useful for automation and for use on needle, capillary and tip based liquid handling systems
It is effective on the ABI®3730 capillary sequencer, removing the need for the use of expensive septa mats
The ClearASeal Pierce forms a complete seal to a plate enabling moderately low and high temperature uses, including PCR when using a pressurized heated lid thermal cycler
It demonstrates a moderate solvent resistance and can be utilized for short term compound storage
This seal is available as sheets, for use with manual and semi-automated sealers, such as our HeatASeal 500 Sealing Machine
Also available in multiple roll formats compatible with specified automated heat sealers, such as our Wasp or Chameleon XT
Other Products
Purple-Jelley Hyaluronic Acid assay kit
Product Info
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Product Info
Purple-Jelley Hyaluronic Acid assay kit
Biocolor’s Purple-Jelley assay kit is the perfect tool for accurate measurement of hyaluronic acid / Hyaluronan levels in your samples. This colorimetric assay is optimised for quantitative analysis in-vivo, tissue-derived hyaluronic acid / Hyaluronan and includes full step-by-step instructions.
Colorimetric Detection (655nm) (Endpoint)
Hyaluronic Acid: A gentle giant!
Hyaluronic acid, in its hydrated form, is a unique carbohydrate polymer, often referred to as a ‘gentle giant.’ It consists of a lengthy, flexible, non-branching chain with a repeating disaccharide pattern. This disaccharide is composed of alternating uronic acid and aminosugar units.
Why is our kit called ‘Purple-Jelley’?
Discovering the J-Aggregate Effect in Cyanine DyesIn 1936, Edwin Jelley made a fascinating observation, documented it in a letter to Nature (Nature 138, 1009 – 1010). He noted a peculiar behaviour of certain cyanine dyes, that when dissolved in 5 M NaCl, they dyes exhibited a third absorbance peak at a longer wavelength, around 650nm. In deionized water, however, they displayed only a double peak at approximately 540nm and 570nm. The 650nm peak in concentrated dye solutions resulted from the aggregation of dye molecules and was later termed a ‘J-aggregate,’ in honor of Edwin Jelley. The J-aggregate is known as a supra-molecular complex, formed by stacking individual dye molecules.
Subsequent research in the 1960s, notably by Kay et al. (J. Physical Chem. 68, 1896 – 1906), revealed that various biological polymers, including proteins, DNA, polar lipids, and glycosaminoglycans, could also induce this third absorbance peak. This phenomenon led to the development of the Purple-Jelley assay, named after the purple color of the dye reagent and Edwin Jelley himself.
An overview of the Purple-Jelley assay steps:
During the assay, hyaluronic acid is selectively purified during the assay sample preparation protocol. This is then reacted with the Purple-Jelley dye reagent, and the absorption of the characteristic third wavelength recorded. By comparison with a calibration curve the hyaluronic acid content of the sample can be measured.
Step 1. The assay protocol takes tissue samples through a sequential sample preparation protocol which involves enzymatic protein digestion, followed by precipitation and purification of GAGs, culminating in the precipitation of purified Hyaluronic acid.
Step2. The processed sample is then incubated for 10 minutes with the Purple-Jelley dye reagent, forming a coloured product which can be measured spectrophotometrically.
Step 3. The Hyaluronic acid content of unknown samples can be calculated by comparison against a calibration curve prepared using a standard comprising hyaluronic acid (supplied with the kit).
Assay range
10 – 100µg/ml
Limit of Detection
10µg/ml
Detection Method
Colorimetric Detection (655nm) (Endpoint)
Measurements per kit
100 in total (allows a maximum of 46 samples to be run in duplicate alongside a standard curve).
Suitable Samples
In-vivo: Hyaluronic acid purified from in-vivo tissues. The kit protocol involves extraction and purification of hyaluronic acid prior to reaction with the Purple-Dye reagent.
Precautions
This kit is designed for research use only. Not for use in diagnostic procedures. Kit requires access to a centrifuge, as well as a spectrophotometer/colorimeter capable of colorimetric, absorbance detection at 655nm. Specific sample preparation protocols may require customer to provide further reagents, consult assay manual for further information.
2. Hyaluronan Reference Standard (1x 5ml, 0.2mg/ml soluble Hyaluronic Acid)
3. Precipitating Reagent (2x 34ml)
4. Sodium Chloride (1x 20ml)
5. Cetylpyridinium Chloride (1x 20ml)
6. TRIS-buffered Saline (5x tablets)
7. 2ml screw-cap tubes for preparation of samples.
8. Assay kit manual
NB: Additional reagents may be required for sample preparation prior to assay. Consult manual or contact us for further details.
Document
Biocolor’s Purple-Jelley assay kit is the perfect tool for accurate measurement of hyaluronic acid / Hyaluronan levels in your samples. This colorimetric assay is optimised for quantitative analysis in-vivo, tissue-derived hyaluronic acid / Hyaluronan and includes full step-by-step instructions.
Lyophilized format designed for room temperature shipping
Available in TaqMan format for analysis
Norgen’s Vibrio cholerae TaqMan PCR Lyophilized Kit is designed for the detection of Vibrio cholerae specific DNA in a real-time PCR based on the use of TaqMan® technology. The lyophilized format is designed to ship the kit at ambient temperature.
Norgen’s Vibrio cholerae TaqMan Lyophilized Probe/Primer and Control Set is designed for the detection of Vibrio cholerae specific DNA in a real-time PCR based on the use of TaqMan® technology. The lyophilized format is designed to ship the kit at ambient temperature.
All kit components should be stored at -20°C upon arrival.
Once reconstituted, repeated thawing and freezing (>2 times) of the Master Mix and Positive Control should be avoided, as this may affect the performance of the assay. If the reagents are to be used only intermittently, they should be frozen in aliquots.
Each kit is provided with 4 tubes of 2X PCR Master Mix and each tube is enough to run 25 reactions. It is not necessary to reconstitute all Master Mix tubes at once. The Master Mix tubes can be reconstituted as and when needed.
All kit components can be stored for 2 years after the date of production without showing any reduction in performance.
Peelable heat sealing foil which seals to polystyrene plates. This seal is resealable, pierceable and suitable for compound storage too.
Heat sealing offers a 100% effective method of plate sealing, for complete seal integrity, as well as being quick and cost effective
Our PierceASeal Foil PS Heat Seal produces a strong seal to polystyrene plates
It is compatible with polypropylene and polystyrene plates
This seal demonstrates moderate solvent resistance and can be used for low temperature compound storage, in DMSO and organic solvents, and short term room temperature storage
PierceASeal Foil PS Heat Seal can be pierced with a pipette tip manually, by a liquid handling robot, or it can be removed by peeling (from polystyrene only). It can be resealed by applying another Polystyrene Foil Heat Seal directly on top of a previously pierced seal
This seal is available as sheets, for use with manual and semi-automated sealers, such as our HeatASeal 500 Sealing Machine
Also available in multiple roll formats compatible with specified automated heat sealers, such as our Wasp or Chameleon XT
Document
Peelable heat sealing foil which seals to polystyrene plates. This seal is resealable, pierceable and suitable for compound storage too.
